Vanillic acid

Vanillic acid
Names
	Preferred IUPAC name 4-Hydroxy-3-methoxybenzoic acid
	Other names 4-Hydroxy-m-anisic acid, Vanillate
Identifiers
CAS Number	121-34-6 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:30816 ;
ChEMBL	ChEMBL120568 ;
ChemSpider	8155 ;
ECHA InfoCard	100.004.061
KEGG	C06672 ;
PubChem CID	8468;
UNII	GM8Q3JM2Y8 ;
CompTox Dashboard (EPA)	DTXSID6059522 ;
	InChI InChI=1S/C8H8O4/c1-12-7-4-5(8(10)11)2-3-6(7)9/h2-4,9H,1H3,(H,10,11) Key: WKOLLVMJNQIZCI-UHFFFAOYSA-N ; InChI=1/C8H8O4/c1-12-7-4-5(8(10)11)2-3-6(7)9/h2-4,9H,1H3,(H,10,11) Key: WKOLLVMJNQIZCI-UHFFFAOYAH;
	SMILES COc1cc(ccc1O)C(=O)O;
Properties
Chemical formula	C8H8O4
Molar mass	168.148 g·mol−1
Appearance	White to light yellow powder or crystals
Melting point	210 to 213 °C (410 to 415 °F; 483 to 486 K)
Hazards
NFPA 704 (fire diamond)	1 0 0
Related compounds
Related compounds	Vanillin, vanillyl alcohol
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Vanillic acid (4-hydroxy-3-methoxybenzoic acid) is a dihydroxybenzoic acid derivative used as a flavoring agent. It is an oxidized form of vanillin. It is also an intermediate in the production of vanillin from ferulic acid.